Types of magnetic amplifiers - Survey

Many forms of magnetic amplifiers have been described in the past 50 years. The patents and writings relating to these devices have been examined to determine what types of magnetic amplifiers exist and what properties these devices have in common. The objects of this paper are: (1) to describe the various types of magnetic amplifiers, and (2) to present a method by which the basic principles relating to these devices may be codified according to an orderly system.